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Long-Term Debt (Details Textual) - USD ($)	1 Months Ended	3 Months Ended					12 Months Ended
Long-Term Debt (Details Textual) - USD ($)	Aug. 18, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Secured Debt							$ 1,100,000
Long-term Debt, Total							36,365,000	$ 36,078,000
Write off of Deferred Debt Issuance Cost		$ 557,000	$ 0	$ 0	$ 0	$ 0	557,000	$ 0	$ 55,000
Amortization of Acquisition Costs							$ 266,000
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage							0.25%	0.16925%
Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage							0.30%	0.35%
Maximum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate							1.00%	1.25%
Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage							0.20%	0.25%
Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate							0.00%	0.25%
Libor Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage							0.25%
Libor Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate							2.00%	2.25%
Libor Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate							1.00%	1.25%
Term loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Total							$ 0	$ 30,000,000
Term loan [Member] \| Two Thousand Eighteen Matuirity Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Total							30,000,000
Revolving credit facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Aug. 18, 2020
Long-term Debt, Total	$ 100,000,000						0	$ 5,000,000
Line of Credit Facility, Remaining Borrowing Capacity							$ 65,000,000
Long-term Debt, Maturities, Repayment Terms							five-year
Revolving credit facility [Member] \| Two Thousand Eighteen Matuirity Debt [Member] \| Old Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt, Total							$ 90,000,000